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DE Patent: DE-64,971
Ein Strömungsventil für Gasund und Petroleummaschinen A Flow Valve for Gas and Petroleum
Patentee: Johannes Spiel (exact or similar names) - Berlin, Germany USPTO Classifications: Tool Categories: propulsion and energy : internal combustion engines : internal combustion engine valves industrial machines : industrial machine mechanisms : industrial control apparatus : flow controls Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Feb. 24, 1892 Patent Pictures: [ 1 | 2 ] Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for A. Shirlaw & Co.

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